_mmc_suspend
_mmc_suspend(host, MMC_POWEROFF_UNBIND);
err = _mmc_suspend(host, MMC_POWEROFF_SUSPEND);
err = _mmc_suspend(host, MMC_POWEROFF_SHUTDOWN);
err = _mmc_suspend(host, MMC_POWEROFF_SUSPEND);
err = _mmc_suspend(host, MMC_POWEROFF_UNDERVOLTAGE);